Brake for windmills.



' A.J.PAT0H.

BRAKE FOR WINDMILLS.

APPLICATION FILED JAN. 2, 1906.

PATENTED SEPT. 25, 1906.

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PATENTED SEPT. 25, 19,06.

A. J. PATCH. BRAKE FOR WINDMILLS. APPLIUATION .FILED JAN. 2. 1906.

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ALLEN MORSE ILLINOIS.

PATENT EETCE.

J. PATCH, OF BELOIT, WISCONSIN, ASSIGNOR TO FAIR-BANKS, & COMPANY, OFCHICAGO, ILLINOIS, A CORPORATION OF BRAKE FOR WINDIVHLLS.

Application filed January 2. i906- Serial No.

To n/ZZ whom, 7115 nfl/(ty conc/27%:

Be it known that I, ALLEN J. liirci-i, a citi- Zen of the United Statesof America, residing at Beloit, in the county lfisconsin, have inventedcertain new and useful Improvements in Brakes for lVindmills, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

My invention relates to new and useful improvements in windmills, and itconsists in the novel construction and arrangement of parts, as will bemore fully hereinafter described, and set forth in the claims.

The object of my invention is to provide a simple and eflicient meansfor operating a brake on the wheel when the vane is swung intoparallelism therewith and at the same time to provide means forreturning the vane to its normal position.

In the drawings, Figure l shows a plan view of my device, and Fig. 2 isa side elevation thereof.

A is a suitably-swiveled head or standard with a wheel B journaledthereon, preferably in an integral arm or casing B Bl is the wheel-shaftand carries a gear C, meshing with a gear C on stub-shaft C2. Thestub-shaft is journaled on the head in casing D, preferably integralwith the head.

E is a crank eccentrically connected to the gear C and pivoted on an armE', projecting from the head. This crank is suitablyT connected toreciprocate the rod E2, and as these arts are not comprised in myinvention I will not further describe them.

F is the vane, pivoted on bolt f on lugs or shoulders E F2 on the headnear its base an supported by a brace G, pivoted on a bolt g on theshoulder G near the top of the head.

H is an arm or bar secured, preferably, by bolts h to the shoulder h onthe head. The bar H projects on both sides of the head and carries asheave H on one end. A chain or cable J, connected to the vane, passesaround this sheave and over a sheave J', journaled on the head, fromwhence it extends to a suitable point within reach from the ground, sothat the operator by pulling the cable can swing the vane intoparallelism with the wheel, which is the ordinary means for stoping thewheel. K is a brake-druin preferably integral with the wheel-hub andadapt- Specicaton of Letters lPatent.

of Rock and State of prefer to employ are Patented Sept. 25, 1906.

l ed to be engaged by a brake-band K. The stationary end of thisbrake-band may be held by any suitable means, but the means I theinvention of E. E. Benedict and is the subject of an application forpatent now before the Office. This construction consists of a lug L,integral with the casing I) of the stub-shaft C2, to which lug is boltedthe stationary end k band K. M is a lever pivoted at an intermediatepoint on the other end H2 of the bar H, and one end of this lever ispivotally connected to the free end lf2 of the brake-band. At a suitablepoint near the other end of the lever M it is pivotally connected to oneend of a link N, the other end of which is pivoted on the vane F. Thisend of the lever M is further connected to the vane by a spiral springO, and the lever lengths are so arranged that when the vane is swunginto parallelism with the wheel the link N, acting on the lever M, willoperate the brake. Also the point on the lever at which the spring isattached moves on a shorter radius than the oint on the vane at whichthe other end of the spring is attached, with the result that the springis placed under tension and when the cable is released will tend to drawthe vane into its normal position. A

It will be seen that the above-described system of levers is simple andeflicient, and when the vane is swung the wheel will be quickly stopped.The spring is preferably taut at all times and holds the vane in itsnormal position and prevents undue looseness and rattling at all times.

What I claim as my invention is 1. In a windmill the combination with aswiveled head, a wheel journaled thereon, a vane pivotally connectedtheretoand means for swinging said vane on its pivot, of a brake 'forsaid wheel, a lever pivotally attached to said head having one endconnected to operate said brake and the other end connected to saidvane, whereby the swinging of said vane will operate said brake and asecond connection between said vane and lever for returning said vane toits first position.

of the brake- IOO 2. In a windmill the combination with a p brakemechanism for said mechanism for said wheel, a lever pivotally lconnection under tension, for the purpose deattached to said head andhaving one end operatively connected to said brake mechanism, and arigid and a yielding connection between said vane and said lever foroperating said brake by the swinging of said vane, and for returningsaid vane to its rst position when said swinging means is released.

3. In a windmill, the combination with a swiveled head, a wheeljournaled thereon, a vane pivotally connected thereto and means forswinging said vane on its pivot, of a wheel, a lever pivotally attachedto said head and having one end operatively connected to said brakemechanism, a spring connecting the other end of said lever with saidvane, and aI pivoted link connecting saidI lever with said vane, for thepurpose described.

In a windmill, the combination with a swiveled head, a wheel journaledthereon, a vane pivotally connected thereto and means for swinging saidvane on its pivot, of a brake mechanism for said wheel, a leverpivotally attached to said head and having one end operatively connectedto said brake mechanism and a rigid and a yielding connection betweenthe other end of said lever and said vane, whereby the swinging of saidvane operates said brake and places said yielding scribed.

5. In a windmill, the combination with a swiveled head, a wheeljournaled thereon, a

vane pivotally connected thereto, a bar rigidly mounted on andprojecting on both sides of said headJ and means associated with saidbar for swinging said vane on its pivot, of a brake mechanism for saidwheel, a lever ulcrumed on a projecting end of said bar and having oneend operatively connected to said brake mechanism, a link connectingsaid lever with said vane, whereby the swinging of said vane willoperate said brake mechanism and a spring connecting said vane with saidlever, for the purpose described.

6. In a windmill the combination with a head, a wheel journaled thereon,a vane pivotally connected thereto and means for swinging said vane, ofa brake mechanism tor sai wheel, a brake-operating means and a rigid andyielding connection between said vane and said brake-operating means,for the purpose described.

In testimony whereof I ailix my signature in presence of two witnesses.

ALLEN J. PATCH. Witnesses F. G. HOBART, GEO. B. INGERsoLL.

